Abstract #0816

Multi-echo Pseudo-Golden Angle Stack of Stars Thermometry with High Spatial and Temporal Resolution

Bryant Svedin¹ and Dennis L. Parker¹

¹University of Utah, Salt Lake City, UT, United States

A multi-echo pseudo-golden angle stack of stars sequence is investigated for use in MR thermometry. High spatial and temporal resolution is achieved through k-space filtering. PRF temperature, T2*, ρ (signal magnituade at TE = 0), respiration correction and fat/water separation are simultaneously measured. Use of a pseudo-golden angle increment allows for the removal of phase (and therefore PRF temperature) artifacts due to changing k-space sampling between reconstructed time points. k-Space sampling based phase reference greatly improves temperature standard deviation. FUS heating experiments are performed while simulating respiration artifacts.

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